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hi in this video we are going to learn how can we add multiple event handler for a specific text box so basically the idea is that letamp;#39;s say you have a text box like this and we want to add multiple event handler so what do I mean by event handler and multiple even Handler so even Handler means that whenever I do some changes on this text box this particular code will fire up okay this textbox change event will fire up right now I want this to fire up multiple times okay so consider this scenario this text box is allowed to have alpha numeric validation that means that we can only enter alphabet and digits okay now I want to create two validation class one is for alphabet another one is for digits and I want to add those two validation on this text box so basically whenever weamp;#39;ll type anything then alphabet validation will fire up and digit validation will fire up as well and if any of those true or basically we can say if both of them are true then we want to all that